Machine for rectifying stereotype-plates.



P. oRsoNI. MACHINE FOREGTIPYING STEREOTYPB PLATES. YPPLIUATION FILEDIAB. 24,19409.

Figi. 17

I Wltvsses. i i 'Duvenhw P. osoNL' V MACHINE FOR REGTIFYING STEREOTYPEPLATES;

APPLIUATVION FILED MAB. 24,1909 973,807. A y Patented oen. 25, 1910.

3 SHBETS-SHBET a.

PHILIPPE ORSONI, OYPARIS, FRANCE.

MACHINE FOR REC'IIFYING STEREOTYPE-PLATES.

Specification of Letters Patent.

Application filed March 24, 1909.

Patented Oct. 25, 1910.

serial No. 485,496.

To all whom 'it may concern:

Be it known that I, PHILIPPE ORsoNI, a citizen of the French Republic,residing at Faris, France, have invented new and useful Improvements inMachines for Rectifying Stereotype-Plates of which the following is aspecification.

Stereotype-plates always present irregularities after casting whichrequirecareful retouching. The surfaces in relief are not absolutelyplane, so that the parts which are lower than the others would notproduce a proper and clear print if the plate were used as it is.Actually the stereotype plates are rectified or retouched by hand, bymeans of special tools and in such a manner that the workman afterhaving marked the sunken parts of the plate on the back of the blockstrikes said marked parts with a hammer until they are rectied. Thismethod is not very precise and takes much time, because the workman whohas to work upon the back of the plate can only with diiiiculty surveyhis work.

The present invention relates to a machine for mechanically executingthis work, which thus is done much quicker and with greater precision. Y

In the accompanying drawings the machine is represented by way ofexample.

Figure 1 is a front view of the same; Fig. 2 is a section on line A A AA of Fig. 1; Fig. 3 represents in ground plan the device for returningto its'normal position the eccentric shaft of the hammer; Fig. 4 showsin ground plan part ofthe lifting device for the upper vertical shaft;Fig. 5 is an elevation in section representing the principal. partsbetween which the stereotype plate to be rectified is fixed; Fig. 6 is aground plan of the disk which carries the embossing tools. Fig. 7 showsthe engraved lower surface of the glass block indicating the locationsof the embossing tools.

The machine comprises a bed plate 1 `which has a circular hole for thereception of a disk 2 which is fixed upon a revoluble support 3 actuatedby means of a toothed wheel 4. In said disk 2 there are provided severalsockets of various shape which correspond to the shape of the embossingtools 5. Normally, that is to say in their lowest position the upperends of said tools 5 are on a level with the upper surface of disk 2which in its turn is on a level with the upper surface of bed-plate V1,but they are adapted to be lifted under the action of blows exerted upontheir lower ends.

The hammer 6 which serves for advancing the tools consists of a strongsteel bar which is adapted to be vertically displaced below said tools5. The axles of the tools are disposed in a circumference which isconcentric to the axis of support 3 so that when the disk 2 is rotatedany of the tools 5 can be brought over the hammer 6.

Above the bed-plate 1 a glass block 7 is arranged which is mounted in ametal frame 8 which forms a dome 9 permitting the inspection of the workupon the bed-plate. The frame 8 of the glass-block 7 is fixed upon thelower end of vertical shaft 10 revoluble in a support 11 which formspart of the frame of the machine. The glassblock participates in therotation of said shaft as well as in its vertical displacements;

and besides,.it participates in the rotation of the tool-disk 2 withwhich it is connected by means of the conical toothed wheels 12, 12,horizontal shaft 13, cog-wheels 14, 14,

vvertical shaft 15 and toothed wheels 16, 16

and 4. A hand-wheel 17, keyed upon shaft l15 serves for acting upon thetransmission and to operate simultaneously the glass block 7 and thetooldisk 2 as if they formed one integral part. Upon the lower surfaceof the glass-block 7 the exact contour of the upper end of the differentembossing tools are engraved so that the operator of the machine is ableto see the exact place of each tool even if a stereotype-plate beinserted between the glass block and the tool-disk. K

The machine is used `in the following manner :*The stereotype-plate isplaced upon the bed-plate 1 with its back turned down so that theprinting surface of the plate can be seen through the glass-block 7. Theplace to be rectied or retouched is then brought over the hammer 6 andthe disk 2 is revolved by means of the hand-wheel 17 until the suitableembossing tool 5 is brought over the hammer 6. This is easily done asthe glass-block 7 revolves with disk 2 and the exact place of eachembossing-tool is marked upon the glass block. Vhen the hammer G is nowoperated the corresponding embossing tool will act exactly upon the spotwhere a rectification of the stereotypeplate is required.

The hammer 6 is operated in they following manner In the lower part ofthe machine the driving shaft 1S is mounted which can be operated bymeans of pulleys or in any other suitable manner. An eccentric 19 iskeyed upon said shaft 18 which carries a vertical arm 20, the upper endof which is guided in a vertical slot of the outer end of the guidepiece 21 (Fig. 3) so that said arm can move up and down and swinglaterally. Springs 22 fixed with one end to said guide piece 21 and withthe other end to lateral arms of the vertical arm 2O serve for pullingsaid lever to the right so that its inclined shoulder 27 bears against aroller 23 fixed upon a movable piece 24 which can be operated by meansof the pedal 26 and the connecting rod 25. An abutment piece 2Sadjustably fixed upon the vertical arm 20 is destined to act upon theabutment 29 of the hammer 6. The upper end of a strong spiral spring 30keeps the hammer G in lifted position. When the machine is to be used,the driving shaft 1S is rotated in any suitable manner so that thevertical arm 20 is continuously moved up and down from the eccentric 19.The inclined shoulder 27 sliding along the roller 23, the vertical arm20 is pushed to the left away from the hammer (3 and the abutment 28 ofthe vertical arm does not come in contact with the abutment 29 of thehammer. If however a pressure is exerted upon the pedal 26, the support24 of the roller '23 is lowered and consequently the vertical arm is notpushed aside by the roller 23 so that its abutment 28 draws along theabutment 29 of the hammer G, the latter being thus depressed, while atthe same time the strong spring 30 is compressed. As soon as theshoulder 27 of the arm 20 comes in contact with the roller 23, said armis pushed aside and the abutment 29 being released the hammer G isstrongly thrown upward by the spring 30. Thus the corresponding tool 5is struck against the stereotype-plate. The farther the pedal has beendepressed the stronger will be the blow struck by the hammer. Thestrength of the blows therefore can be easily regulated. Theslidingpiece 24 is maintained in its lifted position by means of thespiral spring 31.

To make the action of the embossing tool upon the stereotype-plateeffective, said plate has to be strongly pressed upon the bed-plate whenthe blow is being struck. For this purpose a counter-weight 32 isattached to the upper end of shaft 10 which receives the stroke of thehammer and balances the same. The glass-block is slightly lifted aftereach blow to permit the displacement of the stereotype-plate. Thislifting of the glass-plate is effected by any suitable mechanical means,for example, by means of a cam 33 keyed upon driving shaft 18, a lever34, connecting-rod 35 and lever 36 which is forkshaped and whose arms37,

3T engage with a groove 38 of shaft 10. A spiral spring 35 on the rod 35serves for returning the glass plate to its normal position after thelifting of the same, as the spring is fixed with one end to the rod 35and with its other end to the lever arm 3G. The glass-block may furtherbe lifted by hand in acting upon a handle 39 fixed to a plate 40 mountedupon support 11 of shaft 10 and provided with two beveled projections41, 41 which, when plate l0 is in a certain position, getunder the twoarms of lever 36 and force the same to ascend and to take along shaft10.

To facilitate the adjustment of the glassblock 7 and of the disk 2,incisions 42 are arranged along the upper circumference of the frame 8,9, so that, by means of a pointed screw 44 carried by a blade spring 43and which engages with one of said incisions 42 the proper position ofsaid parts is determined.

The perfect application of the transparent block 7 upon thestereotype-plate is facilitated by a ball-joint 45 which forms theconnection between the frame supporting said glass block and thevertical shaft 10. An india-rubber washer 416 is inserted between thebush 47 of the ball-joint and the lower surface of shaft 10 and servesto secure during the lifting the position of the frame S, 9 which thesame has assumed upon the stereotype plate during the precedingapplication.

I claim A machine for rect-ifying stereotype-plates comprising incombination a bed-plate, having a central opening', a tool-diskrevolubly mounted in said central opening and provided with suitablyshaped sockets for the embossing tools, embossing tools of various shapemounted in the sockets of the tool disk so that they are on a level withthc upper surface of said disk, a hammer arranged under the tool diskand means for throwing the hammer against the lower end of theembossing-tool which is placed over the same, a glass block having theshapes of the embossing tools engraved upon its lower surface at theexact place where such tools are located, a. frame for supporting saidglass block so that its lower surface is easily visible for the operatorof the ma-` chine, means for pressing the glass-block upon thetool-disk, means for connecting said glass-block with the tool disk sothat they rotate together and suitable means for lifting the glass blockfrom the tool-disk upon which the stereotype-plate is placed,substantially as described and for the purpose set forth.

PHILIPPE ORSONI. Titnesses PT. C. Coxn, EDWARD 1V. BIEsnLY.

